Epson Equity LT Troubleshooting Guide download pdf (Page 2)

EQUITY LT

Back Panel DIP Switch Settings

Switches

Functions

12 3 4

Use external diskette drive

3FF

Use parallel printer

External diskette drive is B

OFF

External diskette drive is A

1 FDD

OFF

FDDs

Serial port is secondary

OFF

Serial port is primary

System Board Jumper Adjustment

Jumper 5 is used to control the LED showing drive access

for the left-hand drive.

In position A, it supports a FDD.

In position B, it supports a HDD.

Connector Pin Assignments

Parallel Port Connector

000000000000cJ

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PIN NO. SIGNAL NAME DIRECTION

-STROBE 0

DATA0

DATA1

DATA2 0

DATA3

DATA4

DATA5

DATA6 0

DATA7

-ACK

BUSY

ZCT

-AUTOFD

-ERROR

-1NIT

-SLCTIN

18-25 GND

DESCRIPTION

Strobe

Printer

Data

Printer Data 1

Printer Data

Printer

Data

Printer

Data

Printer

Data

Acknowledge

Printer Busy

Paper End

Printer Select

Auto Feed

Printer Error

Printer Initialize

Printer Select

Ground

Serial Port Connector

PIN NO. SIGNAL NAME DIRECTION

DESCRIPTION

CRDET

Data Carrier Detect

RXDT

Receive Data

TXDT

Transmit Data

DTR

Data Terminal Ready

Signal Ground

DSR

Data Set Ready

RTS

Request to send

CTS

Clear to Send

Ring Indicator

Monitor Connector

PIN NO. SIGNAL NAME DIRECTION

DESCRIPTION

ROUT

GOUT

BOUT

IOUT

HSYNC

VSYNC

Frame Ground

Ground

Video Signal (Red)

Video Signal (Green)

Video Signal (Blue)

Video Signal (Intensity)

No connection

Horizontal Sync.

Vertical Sync.

EQLT - 2

12/12/88

Equity Series Computers

1 2 3 4 5

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Epson Equity LT Troubleshooting Guide Page 2

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